The Grammy-winning rocker proposed to his model girlfriend Lily Aldridge over the weekend, a rep for the band confirmed to Us Magazine on Monday.

The couple, who have been dating for more than a year, has not set a wedding date. But there is another important date in Caleb’s near future: Kings of Leon is set to release their fifth album, Come Around Sundown, in October. It is the follow-up to their wildly-popular 2008 LP and features the single, Radioactive, which hit the airwaves earlier this month.